GS Renovation carries out structural alterations throughout Clerkenwell, from new openings in warehouse-conversion flats to supported openings and replacement joists in EC1's new-build apartments. Drawing on 30+ years in Islington, we form new steelwork, strengthen tired floors and underpin where the engineer calls for it, all signed off under building control.
Structural alterations for Clerkenwell homes
Structural alterations in Clerkenwell cover more than knocking through: forming a new doorway in a load-bearing wall, replacing sagging joists in an older converted workshop, or creating a supported opening between a kitchen and living space. Each starts with an engineer specifying the steel, the bearing detail and the propping sequence so nothing above is left unsupported while we work.
New openings take a beam onto padstones with temporary props holding the load during a staged demolition. Replacement joists are sized for the span and the intended use. Where movement or an old settlement crack points to weak foundations, underpinning may be recommended, and in a converted building that means careful coordination so shared structure and neighbouring flats are never put at risk.
Consents and sign-off in Islington's EC1
Clerkenwell's flats are overwhelmingly leasehold, so structural alterations need the freeholder's licence to alter and the managing agent's approval of the engineer's scheme. Building-management rules often set out working hours, protection of common parts and sound-insulation standards between flats, and we build all of that into how the job is planned so consent is not held up.
The work itself falls under the Building Regulations rather than planning permission, and Islington Council's building control inspects the steelwork, bearings and any underpinning before certifying it. Only exterior changes in a conservation area or to a listed building would need separate planning consent. Where a new opening or beam affects a wall shared with a neighbour, you serve the party wall notices too.
- Basement and cellar alterations with retaining support
- Chimney breast removal and support to the stack above
- Bressummer and bay window support to period frontages
- Temporary works, propping and needling
- Trial holes to confirm foundation depth and ground conditions
Why Clerkenwell Homeowners Choose GS Renovation
Clerkenwell clients choose GS Renovation because one team owns the whole alteration: engineer's design, freeholder licence and building control all coordinated, with careful propping and tidy working inside an occupied EC1 flat. Thirty years of structural work across Islington means the detailing is right and the sign-off is clean.
- Underpinning carried out in sequenced bays, never one long trench
- Waste cleared as we go, not left piled in the garden
- Every alteration certified rather than quietly built over
- Structural engineer instructed and coordinated on your behalf
- Load paths carried properly down to foundations
- Rated 4.9 from 31 reviews on MyBuilder